Forbidden Knowledge: Alien Artifacts

For the 20th anniversary of "Titanic," James Cameron reopens the file on the disaster.

Featuring never-before-seen footage, this documentary delivers a startling new look at the Peoples Temple, headed by preacher Jim Jones who, in 1978, led more than 900 members to Guyana, where he orchestrated a mass suicide via tainted punch.

This documentary delves into the mysteries surrounding the Neanderthals and what their fossil record tells us about their lives and disappearance.

James Cameron and Simcha Jacobovici go on an adventure to find the lost city of Atlantis by using Greek philosopher Plato as a virtual treasure map.

The history of cinematic sound, told by legendary sound designers and visionary filmmakers.

The inside story of SpaceX's plan to get humanity to Mars, providing an unprecedented glimpse into one of the world's most revolutionary companies. A behind-the-scenes journey with Elon Musk and his engineers as they persevere amidst both disheartening setbacks and huge triumphs to advance the space industry faster than we ever thought possible.

Dick Proenneke retired at age 50 in 1967 and decided to build his own cabin in the wilderness at the base of the Aleutian Peninsula, in what is now Lake Clark National Park. Using color footage he shot himself, Proenneke traces how he came to this remote area, selected a homestead site and built his log cabin completely by himself. The documentary covers his first year in-country, showing his day-to-day activities and the passing of the seasons as he sought to scratch out a living alone in the wilderness.

This remarkable journey across our planet and universe explores how meteorites, shooting stars, and deep impacts have awoken our wonder about other realms—and make us rethink our destinies.

National Geographic's riveting effort recounts all 12 crewed missions using only archival footage, photos and audio.

Oliver Stone charts the history of the United States from the Second World War to the present.